package Chapter7;
import java.util.*;
class MyComparator implements Comparator{
	public int compare(Object obj1,Object obj2) {
		String s1=(String) obj1;
		String s2=(String) obj2;
		int temp=s1.length()-s2.length();
		return temp;
	}
}
public class Example14 {
	public static void main(String[] args) {
		TreeSet ts=new TreeSet(new MyComparator());
		ts.add("jack");
		ts.add("helena");
		ts.add("eve");
		Iterator it=ts.iterator();
		while(it.hasNext()) {
			Object obj=it.next();
			System.out.println(obj);
		}
	}

}
